// paraméterek alapbeállításai
    keep_alive.$interval_in_ms = 3000;
    keep_alive.$connection_timeout_in_ms = 5000;
    keep_alive.$sleep_before_retry_in_ms = 3500;
    keep_alive.$url = "/shared_components/karc_frame/keep_alive_and_get_remote_command.json";
//    keep_alive.$ws_url = "/shared_components/karc_frame/websocket/keep_alive_and_get_remote_command.json";
    keep_alive.$ws_url = "/proxer_pay_webgui/websocket/karc";